OCI Compute

• Enable the Repositories

# dnf install -y dnf-utils zip unzip 
# dnf config-manager --add-repo=https://download.docker.com/linux/centos/docker-ce.repo

• Install Docker

# dnf remove -y runc 
# dnf install -y docker-ce --nobest

• Configure Docker Disk

  MOUNT_POINT=/var/lib/docker
  DISK_DEVICE=/dev/sdb
  # New partition for the whole disk.
  echo -e "n\np\n1\n\n\nw" | fdisk ${DISK_DEVICE}
  # Add file system. 
  # mkfs.xfs -f ${DISK_DEVICE}1
  # Mount it using the UUID of the VirtualBox virtual disk.
  # rm -Rf /var/lib/docker
  # mkdir /var/lib/docker
  # UUID=`blkid -o export ${DISK_DEVICE}1 | grep UUID | grep -v PARTUUID`
  # mkdir ${MOUNT_POINT}
  # echo "${UUID} ${MOUNT_POINT} xfs defaults 1 2" >> /etc/fstab
  mount ${MOUNT_POINT}

• Enable Docker Service

  # systemctl enable --now docker.service
  # systemctl [start|stop|restart|status] docker.service
  # docker info
  # docker version

• Rootless Docker

  # dnf install -y fuse-overlayfs
  # systemctl disable --now docker.service docker.socket
  # rm /var/run/docker.sock
  # sh -eux <<EOF
  #Load ip_tables module
  modprobe ip_tables
  EOF
  $ /usr/bin/dockerd-rootless-setuptool.sh install
  $ systemctl --user [start|stop|restart|enable] docker
  $ sudo loginctl enable-linger $(whoami) <-- Enable Docker Service at login
  [INFO] Installed docker.service successfully.
  [INFO] To control docker.service, run: `systemctl --user (start|stop|restart) docker.service`
  [INFO] To run docker.service on system startup, run: `sudo loginctl enable-linger opc`
  [INFO] Creating CLI context "rootless"
  Successfully created context "rootless"
  [INFO] Using CLI context "rootless"
  >Current context is now "rootless"
  [INFO] Make sure the following environment variable(s) are set (or add them to ~/.bashrc):
  export PATH=/usr/bin:$PATH
  [INFO] Some applications may require the following environment variable too:export DOCKER_HOST=unix:///run/user/1000/docker.sock